baber/WOPTO huggingface dataset:
Patent GB-534730-A (GB)
Title: Improvements in or relating to the insulation of electrically conducting wires with cellulose ester compositions
IPC: H01B3/30
Filed: 1939-08-14
Abstract: 534,730. Electric conductors ; cellulose esters and compositions. JONES, G. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 14, 1939, No. 23459. [Class 2 (ii)] [Also in Group XXXVI] An electrically insulated wire comprises a coating in direct contact with the wire of a composition comprising a cellulose aceto propionate or aceto butyrate plasticized with a chlorinated polynuclear aromatic hydrocarbon. Cellulose aceto propionates in which the acyl radical content calculated as acetic acid is 47 to 56 per cent. and which have a dilution ratio of more than 1.6 are particularly suitable. Dilution ratio is the ratio of the volume of toluene, which must be added to a solution containing 5 grams of the cellulose mixed ester in 100 millilitres of acetone to produce precipitation of the cellulose ester, to the acetone. Preferably a cellulose aceto propionate is used which gives a viscosity in a 10 pre cent. solution in acetone of at least 3 c.g.s. units. The plasticizer may be a chlorinated diphenyl, chlorinated dibenzyl, chlorinated naphthalene, or a homologue of one of these. Other plasticizers which may be used together with the chlorinated aromatic hydrocarbon include trichlor-ethyl phosphate, dibromo butyl succinate, brominated tricresyl phosphate, triphenyl phosphate, dibutyl phthalate, and p-toluene sulphonamide. The composition may also contain pigments, dyes, resins, waxes, fillers, solvents, and diluents. The composition may be free from or may contain volatile solvents and it may be applied by dipping, brushing, spraying, spreading, or extruding round the body to be coated. Plastic compositions may be obtained by incorporating the cellulose ester and plasticizer on hot rolls, adding any other ingredients and continuing rolling till homogeneous, or the ingredients may be added together in a mixing machine in presence of a volatile solvent e.g. methylated spirit, which is subsequently evaporated by working the mixture on hot rolls. In an example, cellulose aceto propionate, chlorinated naphthalene, triphenyl phosphate, titanium dioxide and methylated spirit are mixed together, and subjected to hot rolling, and then the composition is extruded on to a wire. The coating remains flexible at elevated or reduced temperatures and is free from cold flow at ordinary atmospheric temperatures. Cellulose acetopropionate having a dilution ratio of more than 1.6 may be obtained by pre-treating cotton linters with glacial acetic acid, storing for two days at 20‹C. treating with propionic acid, propionic anhydride, glacial acetic acid and sulphuric acid, allowing the temperature to rise gradually to 33 ‹C. and then fall again, adding water to remove excess of anhydride, ripening after adding dilute sulphuric acid until the acyl value is between 53 and 54 per cent. calculated as acetic acid, precipitating the cellulose ester, and stabilizing.
Patent GB-852495-A (GB)
Title: Improvements in window or like lifting devices
IPC: E06B3/52
Filed: 1958-07-22
Abstract: 852,495. Hinges and pivots. GRETSCHUNITAS G.m.b.H. July 22,1958, No. 23520/58. Class 65(2). A lifting device for a door or casement window includes a lifting member 4, bearing on the underside of the hinge leaf and vertically displaceable by means of a handle 15 which is pivotally mounted at 16 on the lifting member and hung from a base plate 2 secured to the door or window frame by a link 17. The lifting member 4 is guided in vertical slots in the base member by spigots 6. The hinge pin 12 is fixed relative to the lifting member 4 by a screw 14 engaging a groove 13 in the pin. In a second embodiment (Figs. 9 to 13, not shown) the lifting member is the hinge pin which is hung from the base plate by a pair of symmetrical links enbracing the pin. The link 17 may be biased to move clockwise about pivot 18 as by a leaf spring on the remote side of the base plate bearing on a nose passing through the base plate and forming an upward extension of the link.
Patent GB-288222-A (GB)
Title: Process of preparing artificial textile products with reduced lustre
IPC: D01C1/00
Filed: 1927-09-07
Abstract: 288,222. Bonwitt, G. April 7, 1927, [Convention date]. Addition to 285,066. Cellulose xanthate solution and other solutions of cellulose derivatives, processes for making filaments from.-When producing artificial silk exhibiting a reduced lustre from viscose according to the process of the parent Specification, the spinning solution containing the added substance is homogenized before spinning in the case of filaments of less than 6 deniers. The size of the particles of the added substance must be decreased progressively as the denier number is reduced, and according to the relation, - D<2> = C (A<2> + A), where D is the denier number, A the size of the particles is microns, and C a constant, which in the case of a normal viscose = 2/3; for 6 deniers, a = 6 - 9 microns, for 3 deniers, a = 3.2 microns, and for one denier, a = 0.8 microns. The Specification as open to inspection under Sect. 91 (3) (a) refers to the application of the process to the manufacture of silk of reduced lustre from other spinning solutions as described iu Specification 285,863. This subject-matter does not appear in the Specification as accepted.
Patent GB-1429932-A (GB)
Title: Gas flow regulating devices
IPC: G05D7/01
Filed: 1972-05-19
Abstract: 1429932 Valves EVERED & CO Ltd 17 May 1973 [19 May 1972] 23571/72 Heading F2V A valve 12 responsive to changes in pressure at an inlet 12a and an outlet 13b maintains a constant rate of flow through one of a number of orifices in a further valve 21. The orifices may be provided with manually or thermally adjustable restrictors. In a second embodiment, the inlet gas flows through the valve seat before it acts on the underside of the diaphragm 14.
Patent GB-918436-A (GB)
Title: Apparatus for operating the mechanism-actuating levers of a sewing machine
IPC: D05B23/00
Filed: 1959-07-10
Abstract: 918,436. Sewing machines. SINGER MANUFACTURING CO. July 10, 1959 [July 23, 1958], No. 23762/59. Class 112. [Also in Group XXIV] For operating with a constant force the spring-biased work-clamp lifting and starting levers of a group-stitch sewing machine, racks 36, 55 connected thereto through chains 52, 67, respectively, are slidable endwise in and rotatable with individual guides 35, 56 which are mounted on pivoted shafts 34, 57, respectively to move the racks into and out of driving engagement with a pinion 27 driven, through a reduction gear 16 and a friction coupling by an electric motor 13 which may also drive the machine. The racks which are normally spring- biased out of contact with the pinion, are engaged therewith by solenoids, 20 only shown, which actuates a lever 42 pivoted at 41 and having an adjustable bolt 44 which bears on the rack 36 between rack guide-pieces 46. The other solenoid 21, not shown, actuates a similar lever 62 to engage the other rack with the pinion. The biasing springs for the rack guards 35, 50, shown only for guide 56, comprise a leafspring 59 fixed in an adjustable mounting 60 and bearing on an arm 58 secured to the shaft 57. Stops 48, 49 and 66, 68 limit the stroke of the racks 36, 55, the friction coupling slipping on engagement of the upper stop with the associated guide. The control switch for the work-clamp-control solenoid 20 is wired in series with an interlock switch which is opened by operation of the normal machine start control, so that after starting, the solenoid 20 cannot be energized to lift the work-clamp. Energization of solenoid 21 when the work clamp is raised, engages rack 55 with the then stationary pinion 16 whereby starting of the machine is prevented.
Patent GB-480727-A (GB)
Title: Valve stem
IPC: B60C29/04
Filed: 1936-08-31
Abstract: 480,727. Tyre valves. SCOVILL MANUFACTURING CO., and WINTER, W. J. Aug. 31, 1936, No. 23832. [Class 135] A tyre valve stem adapted to be secured to an inner tube by means of a mass of cured or semi-cured rubber moulded around the stem has the metal stem a made of substantially uniform external diameter, and has formed integrally therewith adjacent the tube engaging end, two spaced annular enlargements c, d defining an intervening annular recess e equal in diameter to the diameter of the shank. The lower enlargement at the end of the stem has the edge rounded and the thickness of the enlargements is approximately one quarter of the distance between them. In the form shown the rubber mass is moulded around the recess between the enlargements but it may enclose one or both of them. The enlargements may be circular, oval elliptical or polygonal in outline. Specifications 432,896 and 434,585 are referred to.
Patent GB-501540-A (GB)
Title: Heat operated driving means for rotary display devices and other rotating elements
IPC: G09F23/00
Filed: 1937-08-31
Abstract: 501,540. Air turbines. BERND, A. Aug. 31. 1937, No. 23846. [Class 110(iii)] [Also in Group XVIII] Display and like elements are rotated bv convection currents which are given a whirling motion by allowing the air to enter a casing surrounding the element by way of an opening, and locating a source of heat either within or below the casing. The element may be viewed through the casing, or may operate a member located outside the casing. Fig. 6 shows a casing 26 fitted with stationary fan blades 28 which direct the air rising from a heating resistance 27 tangentially against vanes 31 extending radially from a drum 29 which forms a rotatable table for supporting an article for display. In lieu of, or in addition to, the blades 38, lateral openings 32 may be provided through which air directed by curved screens 33 reaches the vanes 31. The screens 33 may be rockable about a vertical axis to make the drum rotate in either direction and in all cases shutters may be arranged over the openings to adjust the speed. A resistance 34 may be located also above the drum; The spindle of the drum 29 may extend upward and carry a rotating platform above the casing 26, or have fitted a pulley by which it drives external mechanism. A plurality of such spindles each furnished with vanes may be arranged parallel to one another in a casing. The heating means may be a lamp which illuminates a stationary transparency.
Patent GB-1102352-A (GB)
Title: Production of highly elastic mouldings of polyurethanes
Inventor: GEHM ROBERT
IPC: C08G18/10
Filed: 1965-06-04
Abstract: Moulded polyurethane elastomers are prepared by reacting in solution an isocyanate modified polyhydroxy compound of MW 1000-6000 and containing terminal -NCO groups with a chain lengthening agent of Formula (I) <FORM:1102352/C3/1> in which R, R1 and R2 can each be a hydrogen atom or an alkyl, cycloalkyl, aryl or aralkyl radical having up to 8C, R3 is a divalent linear or branched aliphatic, aromatic or araliphatic hydrocarbon radical having up to 10C in a continuous chain which may be interrupted by hetero atoms; R4 is the radical <FORM:1102352/C3/2> where A is a hydrogen atom, an alkyl, cycloalkyl, aryl or aralkyl radical and B is an organic radical containing at least one sulphone group and which may be connected with A, and n is 0 or 1; and shaping whilst removing the solvent e.g. by casting on to a plate.  The polyhydroxy compound may be a polyether, polythioether, polyesteramide or polyacetal. The isocyanate may be aliphatic, cycloaliphatic or aromatic.  The solvent may be a polar organic solvent e.g. dimethyformamide, dimethyl acetamide, tetramethyl urea or tetramethylene sulphone.ALSO:In Example (1) 2,4-dihydrazino-6-[N-ethyl-N-thiacyclopentyl - 1,1 - dioxide - amino - s - triazine] is prepared by reacting cyanuryl chloride with ethylene thiacyclopentane 1,1-dioxide amine and adding hydrazine hydrate.  The product is recrystallized from a 1:1 mixture of dimethyl formamide and water.  In Example (2) 2,4 - dihydrazino - 6 - [tetrahydro - 1,4 - thiazino-1,1 - dioxide] - s - triazine is prepared by reacting cyanuryl chloride with tetrahydro-1,4-thiazine -1,1-dioxide and adding hydrazine, followed by recrystallization from dimethyl formamide/water mixture.
Patent GB-677116-A (GB)
Title: Improvements in and relating to rotary volumetric motors
IPC: F01C1/20
Filed: 1950-09-29
Abstract: 677,116. Rotary engines; motor power plant. TAVERNIERS, P. Sept. 29, 1950 [Sept. 29, 1949], No. 23915/50. Classes 110(ii) and 110(iii) [Also in Group XII] An internal - combustion engine of the rotary-abutment type uses the recess 11 in the abutment 10 as a distributing means for combustion gas, or air, admitted through a port 6 and exhausted through an outlet 7. The recess still communicates with the working -chamber, by means of grooves, when out of contact with the ports 6, 7. Fuel may be injected through a port 12 to increase the temperature and pressure of the gases in the expansion space 8<SP>1</SP>. Fig. 8 shows a four-cylinder engine 1, 2 3, 4 with pistons and abutment - recesses angularly spaced relative to each other, to give a balanced drive to a power shaft 42. Clearances are provided between the periphery of a piston 9-9<SP>4</SP> and the bore of the cylinder 5<SP>1</SP>, and also between the abutment periphery and its cylinder 5<SP>2</SP>. The rotors 8, 10 are coupled mechanically. Cooling chambers within the rotors and casing may be supplied with air. A recess 46, Fig. 6, in the abutment communicates with the inlet port whilst a recess 23 communicates with the chamber 8<SP>1</SP> and later the recess 23 is connected with the second abutment chamber by way of a duct 24. The gases are thus admitted at constant pressure when the recess 11 is open to the port 6, followed by an adiabatic expansion dut to the side ducts leading from the recess to the working chamber. A combustion chamber 13, Fig. 7, may be used before the inlet 6 and comprises a fuel injector 14 and a converging nozzle 43 supplying the compressed air, a valve 28 controlling the supply of preheated compressed air from a supply 27. Cooling air from the casing gasket 5<SP>1</SP>, 5<SP>2</SP>, Fig. 8, is led to the combustion chamber supply 27. Compressed air is supplied to the interior of the hollow rotors through annular chambers 30, and leaves through outlets 49. Packings 31 are provided and surrounded by cooling water chambers. Fig. 12 shows an arrangement in which an air compressor 60 supplies hollow rotors 8, 10 through pipes 62, 65, the casing 5<SP>1</SP>, 5<SP>2</SP> through a pipe 63, and the chamber 27 direct through a pipe 66. Valves 67, 68, 69 are controlled by thermostats 81, 82, 83 which are connected to the ports 8, 5,' 10, respectively. A plant, Fig. 9, has a combustion chamber 13, rotary engine 32 according to the invention driving a propeller 33, an exhaust-driven turbine 17 and gearing 50 driving a compressor 16. In a modification a multi-stage engine exhausts into a turbine 17. A third arrangement has a multi-stage engine driving the compressor 16 which is supplied with air from a firststage compressor driven by the turbine 17. An inter-cooler is provided between the compressors. Exhaust gases from the turbine flow through a heat-exchanger to heat compressed air flowing to the combustion chamber. Specifications 631,174 and 642,145 are referred to.
Patent GB-1014229-A (GB)
Title: Improvements in and relating to devices comprising a layer of semi-conductive material
Inventor: BROOKES GEOFFREY
IPC: G02B5/28
Filed: 1955-08-19
Abstract: A method of depositing a layer of tingermanium on a support comprises evaporating tin and germanium in the desired proportions simultaneously in vacuo on to the support.  In an example a soft glass support 0.020 inch thick is arranged about 20 cm. above a boat of high purity carbon connected in the secondary circuit of a transformer and containing a bead of germanium of mass 1.25 gm. and a bead of tin of mass 0.5 mgm.  The glass support has on its upper surface a copper slug carrying a heating winding, and the whole is enclosed in a vacuum bell which is pumped out.  Current is then caused to flow in the winding to heat the support to 250  DEG C. and in the transformer circuit to cause simultaneous evaporation of germanium and tin on to the support.
Patent GB-359099-A (GB)
Title: Steam heating systems for use in high-temperature drying and other installations
IPC: F26B21/00
Filed: 1930-08-12
Abstract: 359,099. Heating by steam circulation. GILLI, P., 57, Br³nnerstrasse, Floridsdorf, Vienna. Aug. 12, 1930, No. 24120. [Classes 64 (ii) and 123 (ii).] In heating and drying &c. installations by means of high pressure steam, a steam generator 1, pump 8, superheater 2, and a heat exchanger 4 form a closed system in which the pump is arranged in the steam line leading from the generator to the superheater. In a second heat exchanger 9, the heating-coil 10 is supplied with wet steam. A byepass 12 enables superheated steam to be passed to the generator, and power steam may be withdrawn through a pipe 14; and a waste heat boiler may be included in the plant. In a modification, two superheaters are used so that saturated steam from the generator may be heated first by the hot steam issuing from the heat exchangers.
Patent GB-241873-A (GB)
Abstract: 241,873. La Barre de Nanteuil, C. de. Oct. 23, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Heating vehicle. - In devices of the kind in which a heater 3 is supplied with hot water from the engine, an ordinary cock or regulating valve 4 is placed in the radiator or main circuit. It is situated either as shown or between the end of the return pipe 7 and the bottom of the radiator.
Patent GB-1313735-A (GB)
Title: Printing methods and apparatus
IPC: G03G17/02
Filed: 1970-05-20
Abstract: 1313735 Electrography ENERGY CONVERSION DEVICES Inc 20 May 1970 [28 May 1969] 24407/70 Heading G2H A conductivity image is produced in the outer layer 4, of a drum 2, composed of an ovonic memory material which may be switched from a stable conductive state to a stable non-conductive state by the application of energy pulses of duration less that 10 microsecs and reconverted to its conductive state by energy pulses of duration longer than 1 millisec. Latent indicia images may be produced by means of a pulsed laser 20, modulated by a scanning photo-densitometer, and a drum scanning means 21; and erased by heating means 5. The images are developed electrophoretically or electrolytically using an applicator pad in the form of a roll 26, Fig.1 or a bath (53) Fig.2 (not shown). Electro-phoretically developed images are transferred to a web 14 and the development process repeated using the same or fresh latent images. A printing plate may be produced by electro-plating layer 4.
Patent GB-321989-A (GB)
Title: Improvements in folding chair construction
IPC: A47C4/14
Filed: 1928-08-24
Abstract: 321,989. Rastetter, W. C. Aug. 24, 1928. Folding seats; backs.-A folding chair comprises a rigid frame constituting a back support 1 and front legs 2 and carrrying a transverse seat-supporting rod 3, a folding seat 10, rear legs 4 pivoted on the rod 3, and members 22, 23 mounted on the rear legs 4 adapted to engage with plate members 12 secured to the sides of the seat, and forming a reinforcement therefor, whereby .upon unfolding the seat the rear legs are extended into operative position. A plate member 12 is shown separately in Fig. 2 and includes a flange 13 with oppositely disposed spurs 14, 15 to engage the seat frame 10 and seat bottom 11. and on extension 16 which operatively engages at 17 with a jaw 23 on the member 22. The unfolding of the seat may be limited by a stop 28 carried by the arms 7 pivoted at 8 and having a slidable engagement 6, 9 with the rear legs 4. The back 29 may consist of a flexible plate of laminated wood which is bent into a convex formation as the seat is unfolded.
Patent GB-606349-A (GB)
Title: Improvements in and relating to soya beans and other seeds of high protein-content
IPC: A23J1/14
Filed: 1945-09-21
Abstract: Stable froths, suitable for use in baking, are made by beating protein-containing solutions obtained by dialyzing aqueous extracts of soya beans, earth nuts, or other seeds containing a substantial proportion of water-dispersible proteins, e.g. the solution obtained by the agitation of 100 lb. of soya bean meal with 500 lb. of water at 20 DEG C. for 2 hrs. and then filtering, and removing the precipitate which forms consequent upon the elimination of the salts from the extract.  The solution may be concentrated or dried in a manner which preserves the dispersibility of the protein in water, the resulting preparation being dispersed in an aqueous medium when it is to be beaten to a froth.
Patent GB-981829-A (GB)
Title: Production of substituted phenols
IPC: C07C37/14
Filed: 1961-07-21
Abstract: Phenols are substituted in the nucleus by passing a mixture comprising a phenol having at least one free ortho or para position and an alkylating, cycloalkylating or alkenylating agent through a thermally lagged bed of a particulate catalyst for the substitution reaction, and correlating (a) the initial composition and temperature of the reaction mixture fed to the bed, (b) the heat transfer to and from the thermally lagged bed of catalyst and (c) the rate at which the reacted mixture is withdrawn from the bed of catalyst so as to provide a predetermined rising temperature gradient from entry to exit from the bed and a predetermined temperature at the exit.  The temperatures of the reaction mixture entering the reactor and the temperature of crude mixture withdrawn from the reactor are preferably at least 40 DEG  C. and at least 80 DEG  C., respectively. The rate of flow of mixture is selected to produce a degree of reaction completeness of at least 30%, and preferably 80%.  The temperature increase along the reactor should be at least 1 DEG  C. for each 8% by weight decrease in the percentage of substituting reagent as the reaction mixture passes through the reactor. Catalysts which may be used in the process include sulphonated coal and, preferably, sulphonated cross-linked polymers of a monovinyl aryl compound. Specified phenolic compounds which may be substituted are phenol, the cresols, the ethyl and propyl phenols, the xylenols, carvacrol, thymol, pyrocatechol, resorcinol, pyrogallol, phloroglucinol, guaicacol, orcinol and hydroquinone. Substituting reagents which may be used are straight chain, secondary and tertiary olefine hydrocarbons, e.g. n-amylene, n-nonene, secondary amylene, tertiary butylene and the polymers of propylene and butylene; cycloaliphatic olefines, e.g. cyclohexene; aromatic hydrocarbon olefines, e.g. styrene; olefinic aliphatic acids, e.g. oleic acid; diolefines, e.g. butadiene; and halogenated olefines.  Compounds which are readily transformed into olefines, e.g. secondary and tertiary alcohols, alkyl halides and ethers, may also be used. The process is advantageously carried out under substantially anhydrous conditions.  In examples phenol is reacted with propylene polymers. Specification 981,828 is referred to.